This Fafnir Ball Bearing is a high precision spindle and machine tool unit with an angular contact design. The bearing is made of steel and has a 17mm bore diameter, 40mm outside diameter, and 12mm width. It is a unit type bearing with model number MM203KCR, manufactured in the United States. The California Prop 65 Warning status is currently unknown. The bearing is suitable for use in various industrial automation and motion control applications. It is a durable and reliable component designed for long-term use. Purchase this high-quality Fafnir Ball Bearing for your industrial needs.